291161042 has 8 divisors (see below), whose sum is σ = 439182000. Its totient is φ = 144767044.

The previous prime is 291161009. The next prime is 291161077. The reversal of 291161042 is 240161192.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406292 + ... + 407007.

It is an arithmetic number, because the mean of its divisors is an integer number (54897750).

Almost surely, 2^291161042 is an apocalyptic number.

291161042 is a deficient number, since it is larger than the sum of its proper divisors (148020958).

291161042 is a wasteful number, since it uses less digits than its factorization.

291161042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813480.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 291161042 is about 17063.4416809740. The cubic root of 291161042 is about 662.7927588035.

The spelling of 291161042 in words is "two hundred ninety-one million, one hundred sixty-one thousand, forty-two".